cannot boot from knoppix 6.7 installed on HD

[Ferro]

Hi,
I am new to knoppix coming from ubuntu, I like the liveCD version I wanted to install in one my Harddisk partition I boot from the knoppix 6.7 liveCD usb, and used the 0wn feature to install knoppix on HD everything went perfect except I didn't installed any bootloader as in my other Partition Ubuntu already has grub so I just update-grub to list Knoppix in grub.
When I rebooted the pc I selected the Knoppix option but it only displays two lines and just hangs there like ever. The last line it displays is "Booting kernel"

after that nothing happens please tell what to do since the LiveCD version of Knoppix is booting perfectly from USB but I cannot boot from the Installed version of it.

[klaus2008]

I could be helpful to know the section of GRUB's configuration file you boot Knoppix with.